Vehicle exhaust pipe welding tool

Abstract

A vehicle exhaust pipe welding tool relates to the field of vehicle parts, an exhaust pipe comprises a main pipeline, at least two connecting pipes and a branch pipeline which are communicated, the at least two connecting pipes are distributed along a first direction, the connecting pipes are connected with the branch pipeline in a welded mode, the connecting pipes comprise a first fixing portion, a second fixing portion and an adjusting portion, the first fixing portion is used for fixing the main pipeline, and the second fixing portion is used for fixing the branch pipeline. The second fixing part is used for fixing a connecting pipe, the adjusting part comprises a movable seat, the movable seat is used for fixing a branch pipeline, and the movable seat is configured to move in the first direction relative to the second fixing part so that the branch pipeline can be connected with the connecting pipe in a welded mode, and it can be ensured that the pipeline cannot shake in the welding process; the welding quality is improved, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of vehicle parts technology, and in particular to a welding fixture for vehicle exhaust pipes. Background Technology

[0002] The exhaust pipe is a component located at the rear of a vehicle, used to expel the exhaust gases produced by the vehicle. The exhaust pipe is usually composed of several sections of pipes with different functions welded together. If the welding quality is poor due to inaccurate positioning between the pipes of the exhaust pipe, air leakage will occur during the exhaust process, resulting in greater noise during exhaust, affecting the driving experience of the vehicle. In addition, the pipes at the leakage points will corrode faster, affecting the service life of the exhaust pipe. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a welding fixture for vehicle exhaust pipes, which can position the exhaust pipes for welding and ensure that the pipes do not shake during the welding process, thereby improving the welding quality.

[0004] This utility model provides a welding fixture for a vehicle exhaust pipe. The exhaust pipe includes a main pipe, a connecting pipe, and a branch pipe. At least two of the connecting pipes are distributed along a first direction. The connecting pipes are welded to the branch pipes. The fixture includes a first fixing part, a second fixing part, and an adjusting part. The first fixing part is used to fix the main pipe, the second fixing part is used to fix the connecting pipe, and the adjusting part includes a movable seat. The movable seat is used to fix the branch pipe and is configured to move relative to the second fixing part along the first direction to facilitate welding the branch pipe to the connecting pipe.

[0005] In one embodiment, the first fixing part includes a support and a through seat. The through seat has a through hole that mates with the main pipe. The end of the main pipe away from the connecting pipe passes through and is fixed in the through hole.

[0006] In one embodiment, the first fixing part further includes a pressure member, which is movably mounted on one side of the through seat via a quick clamp, and the lower end of the pressure member can contact the upper end of the main pipe.

[0007] In one embodiment, the second fixing part includes a support member and a bracket. The bracket is detachably installed on the upper end of the support member. The bracket has at least two receiving grooves, and the connecting pipe is installed and fixed in the receiving grooves.

[0008] In one embodiment, the adjustment part further includes a positioning member, which is detachably installed on one side of the movable seat. The movable seat has a positioning hole, and a positioning rod is movably installed in the positioning hole. The positioning rod can move relative to the sub-pipe so that its end can penetrate into the sub-pipe or separate from the sub-pipe.

[0009] In one embodiment, the upper end of the positioning member is provided with a mounting groove, and the side of the positioning rod is provided with a locking rod. The locking rod can be engaged in the mounting groove to fix the positioning rod in the positioning hole.

[0010] In one embodiment, a fixing block is detachably connected to one end of the positioning rod near the second fixing part. The fixing block has a hexagonal orthographic projection on the axial direction of the positioning rod and has three contact surfaces distributed in a triangular pattern. The contact surfaces are used to contact the inner wall of the branch pipe.

[0011] In one embodiment, the adjustment part further includes a guide seat and a guide rail, the guide rail extending along a first direction, the movable seat being detachably mounted on the guide seat, and the guide seat slidingly engaging with the guide rail.

[0012] In one embodiment, a straight rail is provided on one side of the guide rail, the straight rail extends along a first direction and is parallel to the guide rail, and at least one stop is provided at the lower end of the guide seat, the stop being configured to contact and slide against the side of the straight rail.

[0013] In one embodiment, the adjustment part further includes a retaining seat and a retaining rod. At least two retaining seats are distributed along a first direction on one side of the guide rail and cooperate with the positions of at least two of the connecting pipes. The retaining seat is provided with a retaining groove. One end of the retaining rod is rotatably connected to the guide seat so that the retaining rod can be engaged in the retaining groove or disengaged from the retaining groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] The first and second fixing parts work together to fix the main pipe and the connecting pipe, ensuring that the main pipe and the connecting pipe do not shake during the welding process and thus affect the welding quality. The movable seat can fix the branch pipe and can be adjusted in the first direction according to the position of the connecting pipe so that the branch pipe can match the position of the corresponding connecting pipe, so that the branch pipe and the connecting pipe can be welded by the welding equipment. This helps to ensure the welding quality, avoid air leakage problems, improve the qualification rate of the exhaust pipe, and has a simple overall structure with good practicality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the welding fixture and the exhaust pipe in one embodiment of the present invention;

[0018] Figure 2 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the first fixing part according to an embodiment of the present invention;

[0020] Figure 4 This is another structural schematic diagram of the first fixing part according to an embodiment of the present utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the adjustment part according to an embodiment of the present invention;

[0022] Figure 6 This is another structural schematic diagram of the adjustment part according to an embodiment of the present invention.

[0023] In the picture:

[0024] 10-Exhaust pipe; 11-Main pipe; 12-Connecting pipe; 13-Branch pipe;

[0025] 20-First fixing part; 21-Support; 211-Bottom support; 212-Connecting hole; 22-Through seat; 221-Through hole; 222-Limiting plate; 223-Insertion block; 23-Pressure piece; 24-Quick clamp; 25-Extension seat; 251-First plate; 252-Second plate;

[0026] 30 - Second fixing part; 31 - Support member; 32 - Support member; 33 - Receiving groove;

[0027] 40 - Adjustment part; 41 - Movable seat; 411 - Positioning hole; 412 - Positioning rod; 413 - Fixing block; 414 - Contact surface; 42 - Positioning component; 421 - Mounting groove; 422 - Locking rod; 43 - Guide seat; 431 - Stop; 44 - Guide rail; 45 - Straight rail; 46 - Card seat; 461 - Card slot; 47 - Card rod;

[0028] 50-Substrate. Detailed Implementation

[0029] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. Based on the description of this utility model, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

[0030] Unless otherwise explicitly specified and limited, the terms "setup," "installation," and "connection" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of these terms based on the specific circumstances.

[0031] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of description and simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar properties, not to indicate or imply relative importance or a specific order.

[0033] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0034] The vehicle exhaust pipe welding fixture proposed in this utility model is used for welding assistance of the exhaust pipe 10, such as... Figure 1 As shown, the exhaust pipe 10 includes a main pipe 11, at least two connecting pipes 12, and branch pipes 13. The main pipe 11 is connected to the connecting pipes 12, and the at least two connecting pipes 12 are along a first direction ( Figure 1 The exhaust pipe 10 is distributed in the X direction and connected to the branch pipe 13 by welding. The branch pipe 13 is used to connect to the engine cylinder of the vehicle and to concentrate the exhaust of the cylinder to the main pipe 11 through the connecting pipe 12. The exhaust pipe 10 can reduce the exhaust resistance of the cylinder and avoid interference between cylinders.

[0035] The vehicle exhaust pipe welding fixture proposed in this utility model is used in conjunction with welding equipment (such as a welding torch) to achieve the welding connection between the branch pipe 13 and the connecting pipe 12.

[0036] like Figure 1As shown, the vehicle exhaust pipe welding fixture proposed in this utility model includes a first fixing part 20, a second fixing part 30, and an adjusting part 40. The first fixing part 20 is used to fix the main pipe 11 of the exhaust pipe 10, the second fixing part 30 is used to fix the connecting pipe 12 of the exhaust pipe 10, and the adjusting part 40 includes a movable seat 41. The movable seat 41 is used to fix the branch pipe 13 of the exhaust pipe 10. The movable seat 41 is configured to move relative to the second fixing part 30 in a first direction so that the branch pipe 13 fixed thereon can correspond to the position of the connecting pipe 12, so as to facilitate the welding connection of the branch pipe 13 and the connecting pipe 12.

[0037] The first fixing part 20 and the second fixing part 30 cooperate to fix the main pipe 11 and the connecting pipe 12, so as to ensure that the main pipe 11 and the connecting pipe 12 will not shake during the welding process and affect the welding quality. The movable seat 41 can fix the branch pipe 13 and can be adjusted in the first direction according to the position of the connecting pipe 12 so that the branch pipe 13 can be matched with the corresponding connecting pipe 12, so as to facilitate welding of the branch pipe 13 and the connecting pipe 12 by welding equipment. This helps to ensure the welding quality, avoid air leakage problems, improve the pass rate of the exhaust pipe 10, and has a simple overall structure with good practicality.

[0038] In one embodiment, such as Figure 2 As shown, the first fixing part 20 includes a support 21 and a through seat 22, which are combined with Figure 3 The through seat 22 has a through hole 221 that mates with the main pipe 11. The end of the main pipe 11 away from the connector 12 passes through the through hole 221 so as to achieve positioning and fixation through the through seat 22.

[0039] For example, such as Figure 3 As shown, a base 211 is detachably mounted on the support 21 to facilitate assembly of the base 211 and adjustment of its height. A through-mount 22 is mounted on the base 211. The support 21 has several connecting holes 212 for mounting the base 211. Optionally, the connecting holes 212 are screw holes, and the base 211 is detachably mounted on the support 21 by screwing.

[0040] For example, combined Figure 3 and Figure 4 The mounting seat 22 has a limiting plate 222 installed at the end opposite to the main pipe 11. The limiting plate 222 at least partially covers the perforation 221. When the main pipe 11 is inserted into the perforation 221, the end of the main pipe 11 contacts the limiting plate 222. The limiting plate 222 can position the main pipe 11. When the main pipe 11 is inserted into the perforation 221, when the end of the main pipe 11 contacts the limiting plate 222, it means that the main pipe 11 is positioned in place.

[0041] Optionally, the limiting plate 222 is detachably installed on the through seat 22 so that the shape and position of the limiting plate 222 can be adjusted according to the size of the main pipe 11.

[0042] Optionally, combined Figure 3 and Figure 4 The wall of the perforation 221 is provided with a groove, and an insert 223 is detachably installed in the groove. The specifications and dimensions of the insert 223 can be set according to the pipe diameter of the main pipe 11 so as to contact the outer wall of the main pipe 11, so that the main pipe 11 is fixedly installed in the perforation 221, thereby preventing the main pipe 11 from shaking during the welding of the connecting pipe 12 and the branch pipe 13, which would cause the connecting pipe 12 to shake and affect the welding quality. Preferably, the insert 223 is made of copper, which is soft, high temperature resistant, wear resistant and has good applicability.

[0043] For example, combined Figure 3 and Figure 4 The first fixing part 20 also includes a pressing member 23. The pressing member 23 is movably installed on one side of the through seat 22 by means of a quick clamp 24. The lower end of the pressing member 23 is used to contact the upper end of the main pipe 11 to press the main pipe 11 onto the through seat 22 and fix the main pipe 11. The position of the pressing member 23 can be adjusted by means of the quick clamp 24. The structure is simple and the adjustment is convenient.

[0044] For example, such as Figure 3 As shown, the first fixing part 20 also includes an extension seat 25, which is detachably mounted on the base 211. The extension seat 25 includes a first plate 251 and a second plate 252 that are vertically connected. The first plate 251 is used to contact the lower end of the main pipe 11, and the second plate 252 is used to contact the side of the main pipe 11. The first plate 251 and the second plate 252 cooperate to support the main pipe 11 in conjunction with the through seat 22. When the main pipe 11 is long, it can play a good fixing role, which helps to improve the reliability of the fixing.

[0045] Optionally, the first plate 251 and the second plate 252 have a groove at one end near the main pipe 11, and an insert 223 is detachably installed in the groove. The specifications and dimensions of the insert 223 can be set according to the pipe diameter of the main pipe 11 so as to contact the outer wall of the main pipe 11. Preferably, the insert 223 is made of copper, which is soft, heat-resistant, wear-resistant, and has good applicability.

[0046] In one embodiment, such as Figure 2As shown, the second fixing part 30 includes a support member 31 and a bracket 32. The bracket 32 ​​is detachably installed on the upper end of the support member 31. The upper end of the bracket 32 ​​is provided with at least two receiving grooves 33. The receiving grooves 33 are matched with the diameter of the connecting pipe 12. The connecting pipe 12 is installed and fixed in the receiving grooves 33. The bracket 32 ​​can fix the connecting pipe 12 to prevent the connecting pipe 12 from shaking during the welding operation. Different brackets 32 can be replaced according to the number and specifications of the connecting pipe 12 to be suitable for fixing different exhaust pipes 10, which has good applicability.

[0047] In one embodiment, such as Figure 2 As shown, the adjusting part 40 also includes a positioning member 42, which is detachably mounted on one side of the movable seat 41. The movable seat 41 has a positioning hole 411, which is a through hole. Figure 5 A positioning rod 412 is movably installed in the positioning hole 411. The positioning rod 412 can move relative to the branch pipe 13, and one end of the positioning rod 412 is matched with the inner diameter of the branch pipe 13. One end of the positioning rod 412 can be inserted into the branch pipe 13 to fix the branch pipe 13, or to separate from the branch pipe 13 so that the exhaust pipe 10 can be removed after welding.

[0048] For example, combined Figure 2 and Figure 5 The upper end of the positioning component 42 is provided with an installation groove 421, and the side of the positioning rod 412 is provided with a locking rod 422. The locking rod 422 can be locked in the installation groove 421 to fix the positioning rod 412, so that the positioning rod 412 will not move along its own axis or rotate around its own axis in the positioning hole 411. The number of installation grooves 421 can be adjusted according to the specifications of the branch pipe 13 to change the position of the positioning rod 412 relative to the positioning hole 411.

[0049] When it is necessary to fix the positioning rod 412, simply lock the locking rod 422 into the mounting groove 421. When it is necessary to unlock the positioning rod 412, simply rotate the positioning rod 412 to remove the locking rod 422 from the mounting groove 421, and then pull the positioning rod 412 axially.

[0050] For example, such as Figure 5 As shown, a fixing block 413 is provided at one end of the positioning rod 412 near the second fixing part 30. The fixing block 413 is detachably installed at the end of the positioning rod 412, and the orthographic projection of the fixing block 413 on the axial direction of the positioning rod 412 is hexagonal. The fixing block 413 has three contact surfaces 414 distributed in a triangular pattern. The contact surfaces 414 are used to contact the inner wall of the branch pipe 13. This arrangement can improve the fixing effect of the positioning rod 412 on the branch pipe 13, avoid the shaking problem of the branch pipe 13 during the welding process, and facilitate the replacement of different fixing blocks 413 according to the inner hole specifications of the branch pipe 13.

[0051] For example, combined Figure 2 and Figure 5 The adjustment unit 40 also includes a guide seat 43 and a guide rail 44. The guide rail 44 extends along a first direction. The movable seat 41 is detachably mounted on the guide seat 43. The guide seat 43 and the guide rail 44 are slidably matched so that the movable seat 41 can move along the first direction so as to adjust the position of the movable seat 41 according to the connection of the branch pipe 13 with different connecting pipes 12, thereby realizing the fixing and welding of different branch pipes 13.

[0052] For example, combined Figure 2 and Figure 5 A straight rail 45 is provided on one side of the guide rail 44. The straight rail 45 extends along the first direction and is parallel to the guide rail 44. At least one stop 431 is provided at the lower end of the guide seat 43. The stop 431 is configured to contact the side of the straight rail 45. When the guide seat 43 moves relative to the guide rail 44, the stop 431 slides with the straight rail 45. The stop 431 and the straight rail 45 cooperate to play a straightening role, so as to ensure the stable movement of the movable seat 41 in the first direction, avoid the position of the branch pipe 13 from shifting or shaking, and help to ensure the welding quality of the exhaust pipe 10.

[0053] Optionally, two stops 431 are provided, with the two stops 431 spaced apart and located on both sides of the width direction of the straight rail 45, contacting and sliding with the straight rail 45.

[0054] For example, combined Figure 2 and Figure 6 The adjustment unit 40 also includes a retaining seat 46 and a retaining rod 47. At least two retaining seats 46 are distributed along the first direction on one side of the guide rail 44 and their positions are matched with the positions of at least two connecting pipes 12. The retaining seat 46 is provided with a retaining groove 461. One end of the retaining rod 47 is rotatably connected to the guide seat 43 so that the retaining rod 47 can be engaged in the retaining groove 461 to fix the movable seat 41 and facilitate welding operations, or it can be disengaged from the retaining groove 461 to release the movable seat 41 so as to facilitate welding operations of the next connecting pipe 12 and the branch pipe 13.

[0055] In one embodiment, such as Figure 1 As shown, the vehicle exhaust pipe welding fixture proposed in this utility model also includes a base plate 50, on which the first fixing part 20, the second fixing part 30 and the adjusting part 40 are all mounted.

[0056] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A welding fixture for a vehicle exhaust pipe, the exhaust pipe (10) comprising a main pipe (11), a connecting pipe (12), and a branch pipe (13), wherein at least two of the connecting pipes (12) are distributed along a first direction, and the connecting pipes (12) are welded to the branch pipes (13), characterized in that, It includes a first fixing part (20), a second fixing part (30), and an adjusting part (40). The first fixing part (20) is used to fix the main pipe (11), the second fixing part (30) is used to fix the connecting pipe (12), and the adjusting part (40) includes a movable seat (41) for fixing the branch pipe (13). The movable seat (41) is configured to move relative to the second fixing part (30) in a first direction so as to weld the branch pipe (13) to the connecting pipe (12).

2. The vehicle exhaust pipe welding fixture according to claim 1, characterized in that, The first fixing part (20) includes a support (21) and a through seat (22). The through seat (22) has a through hole (221) that cooperates with the main pipe (11). The end of the main pipe (11) away from the connecting pipe (12) is inserted and fixed in the through hole (221).

3. The vehicle exhaust pipe welding fixture according to claim 2, characterized in that, The first fixing part (20) also includes a pressure member (23), which is movably installed on one side of the through seat (22) by a quick clamp (24), and the lower end of the pressure member (23) can contact the upper end of the main pipe (11).

4. The vehicle exhaust pipe welding fixture according to claim 1, characterized in that, The second fixing part (30) includes a support (31) and a bracket (32). The bracket (32) is detachably installed on the upper end of the support (31). At least two receiving grooves (33) are provided on the bracket (32). The connecting pipe (12) is installed and fixed in the receiving groove (33).

5. The vehicle exhaust pipe welding fixture according to claim 1, characterized in that, The adjustment part (40) also includes a positioning element (42), which is detachably installed on one side of the movable seat (41). The movable seat (41) has a positioning hole (411), and a positioning rod (412) is movably installed in the positioning hole (411). The positioning rod (412) can move relative to the branch pipe (13) so that its end can be inserted into the branch pipe (13) or separated from the branch pipe (13).

6. The vehicle exhaust pipe welding fixture according to claim 5, characterized in that, The positioning member (42) has an installation groove (421) at its upper end, and the positioning rod (412) has a locking rod (422) on its side. The locking rod (422) can be locked in the installation groove (421) to fix the positioning rod (412) in the positioning hole (411).

7. The vehicle exhaust pipe welding fixture according to claim 5, characterized in that, The positioning rod (412) is detachably connected to a fixing block (413) at one end near the second fixing part (30). The fixing block (413) is hexagonal in the axial projection of the positioning rod (412) and has three contact surfaces (414) distributed in a triangular pattern. The contact surfaces (414) are used to contact the inner wall of the branch pipe (13).

8. The vehicle exhaust pipe welding fixture according to claim 1, characterized in that, The adjustment part (40) further includes a guide seat (43) and a guide rail (44), the guide rail (44) extending along a first direction, the movable seat (41) being detachably mounted on the guide seat (43), and the guide seat (43) and the guide rail (44) being slidably fitted.

9. The vehicle exhaust pipe welding fixture according to claim 8, characterized in that, A straight rail (45) is provided on one side of the guide rail (44). The straight rail (45) extends along a first direction and is parallel to the guide rail (44). At least one stop (431) is provided at the lower end of the guide seat (43). The stop (431) is configured to contact and slide against the side of the straight rail (45).

10. The vehicle exhaust pipe welding fixture according to claim 8, characterized in that, The adjustment part (40) further includes a card holder (46) and a card rod (47). At least two card holders (46) are distributed along the first direction on one side of the guide rail (44) and are in position with at least two of the connecting pipes (12). A card slot (461) is provided on the card holder (46). One end of the card rod (47) is rotatably connected to the guide seat (43) so that the card rod (47) can be locked in the card slot (461) or disengaged from the card slot (461).

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